Bracket.



No. 706,!22.' Patented Aug. 5, I902.

T. SMITH.

BRACKET.

(Application filed Nov. 6, 1901.) v (No Model.) 3 Shaets-Shaet 2.

Patented Aug. 5, I902.

T. SMITH.

BRACKET.

(Application fi1ed Nov. 6. 1.901.!

3 Sheets-Sheet 3.

(No Model.')

UNITED STATES.

THEODORE SMITH, OFCHICAGO, ILLINOIS.

"ATENT (firmer.

B RAC K ET.

SPECIFICATION forming part Of Letters Patent NO. 706,122, dated August5, 1902.

Application filed November 6, 1901. Serial No- 81,296. (No model.)

.72) all whom it may concern:

Be it known that I, THEODORE SMITH, a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois,-have invented certain new and useful Improvements in Brackets,of which the following is a specification.

My invention relates to certain new'and useful improvements in brackets.

The object is to provide a bracket for supporting gas and electriclights, book-rests, dentist-tables, and like objects which will permitof Vertical and longitudinal motion and which can be clamped firmly inposition.

To these and certain minor ends my invention relates to certain novelfeatures of .con-. struction which will be described in thespecification and the essential features of which will be pointed out inthe claims.

In the drawings, Figure 1 represents a side elevation of my improvedbracket supporting a jointed fixture. Fig. 2 represents a top elevationof the same in the same position. Fig. 3 represents a sectionalelevation of the gas-pipe, taken in theline 3 3 of Fig. 1. Fig. 4:represents a side elevation of the bracket in a slightly-differentposition. Fig. 5 represents a detail construction of one of the gaspipejoints. Fig. 6 represents one-half of my locking device. Fig. 7represents a cross-section of said locking device in the line, 7 7 ofFig. 4. Fig. 8 represents atop elevation of one of the parallel rods ofthesecond arm, showing the means for locking-the clamp in place. Fig. 9represents a top elevation of the bracket, showing the portion of thedevice intended to limit the horizontal swing of the bracket. 'Fig. 10represents a detail cross-section of said device, taken in the line 1010 of Fig. 11. Fig. 11 represents a detail top elevation of the samedevice. Fig. 12 represents a detail perspective of another form of thesame device, which is the preferred form for the middle joint of mybracket. Fig. 13 is an elevation of the spline E, shown in Fig. 12; andFig. 1a is an elevation of the locking-piece E shown in Fig. 12.

My device consists, preferably, of an arm composed of the rod A, bracedby the rod A andswung upon the wall by means of two smaller brackets D Dwherein the rod A is clamped by means of the set-screws cld Upon the endof the arm A, which is upturned, as shown in Fig. 1, is supported ablock 0. embracing the upturned end of the rod A and provided with theset-screw 0 by which the pressure of the block upon the upturned end ofsaid arm may be regulated. The block 0 is provided with two metal clips0 0 held in place by means of a screw 0 In the curved extremities ofsaid clips are inserted the ends of the parallel rods ct a ,which attheir farther ends are embraced by two other clips 0 0 similar to 0 cand held in place by the thumbscrew 0 upon a block 0 This block mayeither form part of a gas-bracket, as shown in Fig. 1, or it may act asa supporting device for an electric lamp or support a dentisttable,book-rest, or any other like object.

The two rods a a' are embraced substantially at their center by theclamp B, (shown in detail in Figs. 6 and 7,) which consists in itspreferred form of two parts B B held together by the thumb-screw B Thepart B is provided with a rib b, which is adapted to fit in the slot 190f the rod a. The rods a 0. are made sufficiently flexible to permit ofthe motion of the bracket up and down in spite of thefact that the rodsare held at a constant distance apart. When it is desired to secure thebracket in place, the set-screw B is tightened, and it then becomesimpossible for the parallel-bar arm to move vertically.

In practice the set-screw B is only tightened to such an extent .thatthe parallel-bar arm willlremain in position and not move by its ownweight or the weight of the object supported at its extremity. It is,however, usually quite possible to move the arm by the application 'ofconsiderable force in spite of the clamp.

When this bracket is used to support a gaslight, either a jointed tube,as shown in the drawings, or a flexible rubber tube may be used. It isnecessary to have some means of limiting the horizontal swing of the.bracket in order to prevent the flame from coming into contact with thewall. Tothis end I have provided the device shown in Figs. 9 to 14. Thedevice shown in Figs. 10 and 11 is that used where the bracket is swungupon the wall and is fixed upon the smaller bracket D. It consists oftwo plates G G provided with radial extensions and with suitable notchesto engage a spline 6, attached to the F, which is clamped in the bracketD by means of the set-screw d7.

When it is desired to alter the distance between said radial extensionsin order to permit of greater or less swinging of thebracket, the screwsd d are loosened and the bracket is then raised, thereby raising thespline e and releasing the plates G G, which may be then set in anydesired position and locked there-by replacing the bracket.

Figs. 12, 13, and 14 represent another form of this device, which Iprefer to use in connection with the block 0 at the central joint of thebracket. In this device the two plates H H provided with radialextensions, are separated by the thickness of the block 0 and held inplace by the metal plate E, which engages notches in the plates similarto those in the other plates G G The metal plate E? is held in a slot inthe upturned end of the rod A, and the radial extensions engage theplate E, which is clamped in place by the setscrew 0 running through theblock. When it is desired to regulate the distance between the radialextensions of the plates in this device, the set-screw is loosened andthe block is entirely lifted 01f the upturned end of the rod A, theradial extensions are adjusted as desired, and the block is thenreplaced. In using this bracket for supporting gas-lights the two partsare adjusted as shown in Fig. 9, so that when both joints are turned asfar as possible one way the ends of the bracket will be held some slightdistance away from the wall. In use with the electric light saidfastenings are unnecessary, but they would probably save frequentbreaking of the globe by striking the wall, and in use for supportingtables and book-rests these limiting devices maybe used or not,asconvenient; but there are no doubt many cases in which they will greatlyadd to the utility of the bracket.

As hereinbefore stated, the gas-burner used with this bracket may beeither connected with the supply by a flexible rubber tube or by jointedtubing, as shown in the drawings. It consists of the joints j 7' j j j jj j j connected by the pipes Z Z Z As will be seen by examination of thedrawings, the arrangement of the joints is such that there is auniversal joint at all points and the gaspipes can be moved in anydirection. This form of tubing has certain advantages over the flexiblerubber tubing, for the reason that it can be made perfectly gas-tight,while the rubber tubing cannot.

I realize that considerable changes can be made in the details of thisbracket without materially altering its general construction, and I donot intend to specifically limit myself to the construction herein setforth.

I claim as new and desire to secure by Letters Patent- 1. Thecombination in a bracket, of an arm, adapted to be supported upon thewall and to swing in a horizontal plane, a block pivoted upon theextremity of said arm, likewise adapted to swing in a horizontal plane,a second arm, composed of two parallel rods connected to said block andadapted to swing in a vertical plane, said arm supporting, at itsextremity, a second block, adapted to serve as a supporting device, witha clamp adapted to fix the position of said parallel-bar arm in anydesired position; substantially as described.

2. The combination in a bracket of an arm, adapted to be supported uponthe wall and to swing in a horizontal plane, a block pivoted upon theextremity of said arm, likewise adapted to swing in a horizontal plane,a second arm, composed of two parallel rods connected to said'block andadapted to swing in a vertical plane, said arm supporting, at itsextremity, a second block, adapted to serve as a supporting device, witha clamp embracing said parallel arms and adapted to fix their relativepositions, thereby fastening the parallel-bar arm in any desiredposition; substantially as described.

3. The combination in a bracket, of an arm adapted to be supported uponthe wall and to swing in a horizontal plane, a block pivoted upon theextremity of said arm, likewise adapted to swing in a horizontal plane,a second arm composed of two parallel rods connected to said block andadapted to swing in a vertical plane, said arm supporting, at itsextremity, a second block, adapted to serve as a supporting device, witha clamp consisting of two portions, B, B connected with a set-screw,embracing said parallel bars, one of said portions being provided with arib, 1), adapted to engage a notch, 5 of one of said parallel arms, saidclamp being adapted to be tightened by movement of said setscrew uponthe other part of the arm, thereby fixing the position of the arm asdesired; substantially as described.

4. The combination, in a bracket, having two arms suitably pivotedtogether, one of which contains two parallel rods, 01,, a forcontrolling the movement thereof in one plane, of a limiting device forthe joint, consisting substantially of two plates, provided with radialextensions adapted to be held in place upon one of the arms of saidbracket, and a projecting plate upon the other arm, said radialextensions being adapted to engage said spline to limit the movement ofthe arm, with a clamp, B, adapted to hold firmly the bars, a, a againstrelative longitudinal movement; substantially as described.

5. The combination, in a bracket, with a suitably-pivoted arm having agrooved end, a second arm containing two suitably-pivoted parallel rods,pivoted upon the upturned notches, a plate upon the support seated inend of said first arm, a device for limiting the horizontal movement ofsaid second arm, consisting substantially of a plate, E seated in saidgroove, a second plate supported on said second-named arm, and theplates, 11, H provided with radial extensions adapted to strike theplate, E, and held against radial movement upon said upturned end, of aclamp composed of two parts, B, B adapted to hold the parallel rods ofsaid second-named arm against relative longitudinal movement;substantially as described.

6. In a bracket, the combination with a suitable support, of a swinging,arm pivoted therein and a device for limiting the movement of said armcomprising substantially two plates formed with radial extensions andwith notches in said .plates to prevent rotation of said plates withrespect to the support and a stop-plate upon the armadapted to strikesaid radial extensions in the movement of said arm upon the support;substantially as described.

7. In the bracket, the combination with a support, of an arm journaledthereupon, containing two blocks and a pair of parallel rods pivotedupon said blocks and a device for limiting the movement of said arm uponthe support comprising substantially two perforated plates seated uponsaid support and I having radial extensions, and notches extendl ingfrom saidperforations, a plate seated in said support and engagingeither of the notches in the plates, a second plate seated in said blockand adapted to engage said radial extensions in the movement of the armrelative to said support; substantially as described.

8. In a bracket, the combination with a grooved vertical support, an armpivoted thereupon and comprising substantially a split block seated uponthe upturned end, a second block, a pair of parallel arms pivoted toboth blocks and a set-screw adapted to clamp the block upon the support,of a device for limiting the swinging movement of said arm upon thesupport, comprising substantially two notched plates provided withradial extensions seated upon the support, a plate seated in the groovein the support and in the notches of the plates and a second platesecured in the block and adapted to strike the radial extensions, tolimit the movement of the arm upon the support; substantially asdescribed.

In witness whereof I have hereunto set my hand, at Chicago, in thecounty of Cook and State of Illinois, this 31st day of October, A. D.1901.

THEODORE SMITH.

Witnesses:

CHAS. O. SHERVEY, S. BLIss.

